Improvement in apparatus for walling cisterns



.inch allround, so um it will just fnon the to'p tage, a suiicient number of cylinders,like the one described, should be constructed to last a gang of workmen one day. In walling a well with grout, when the water from any I cause cannot be removed, a curb or other foundation must be sunk, extending above the water. If the water can be removed, the operation may proceed'directly from the bottom of .the well. 'lhe cylinder is to be extended to full size, as seen at Fig. 1. It is then lowered by means of a windlass to the bottom ofthe well, plumbed and made steady. the platform lowered, and fixed in place on the top of the cylinder. The grout is next lowered and packed around the cylinder by the operator, who stands upon the platform, until it is filled to the top. The platform is then removed, another cylinder is lowered until it rests on the top of the first, the platform adjusted, and the work continued in the same manner for at least one day, or until the well is completed.

VVhe-n the grout has set or hardened so as to stand without support, which it will do in one night, or a much shorter time if properly compounded, the cylinders are to be'removed. Todo this, the platform which has been used on the last cylinder is to be removed, the eX tension-braces or stretchers are to be sprung upward by a pull on the ring at thc upper en( of the connecting-rod', opening the movable stave inward'. The bail is attached to bailloops, and by means of the before-mentioned windlass the cylinder is drawn out of the well. If the wall is yet incomplete the last cylinder should be raised only to the top of the grout, extended to its full size, then lowered until its lower end isa few inches below the top of the grout wall already filled in, care being taken that the cylinder stands plumb 5 then proceed as before until the grout wall is completed, which, when set and hardened, if rightly compounded, is as lastingv and durable as if composed of one entire solid rock.

I make no claim to the use of a hollow'cylinder in the process of walling wells, cister'ns, and mine-shafts with grout; but

I claimv as my invention- 1. A hol-low cylinder supported by springsteel ribs in the main part, which, in connection with movable or swing staves in place, forms a complete cylinder, the diameter of which can easily and evenly be reduced, and which is constructed and operated substantially as herein described and set forth.'

2. The platform used ou the top of the cylinder, supporting` and aiding,` the operator in his work, constructed and. operated substantially as hereinbefore described and set forth.

FREDERICK YVILFORD.

Witnesses: t

F. G. PARKS, MARVIN H. BoVEE.- 

